I would advise not to post only on Dtube simply because

1. YouTube does have more audience
2. Putting all your eggs in one basket can lead to having nothing if the site (basket) goes down like Vidme did.

(I wouldn't advise only posting on YT either - I do YT and Dailymotion - but at least we know it survived this long so isn't likely to pull a Vidme, so it's the best option if someone is only posting on one site)

However gaming and lets plays should not be viewed as negatively as many seem to view them. It can take a lot of effort and work to edit them and some people do some awesome creative shit with gaming content. I make gaming content but I also make things that people may say are more original such as animations and on here, I write one ongoing fictional story and also occasionally write things on my thoughts on certain topics. Animation is more time consuming than my gaming content, but I don't think my gaming content is worse than it or lesser simply because it is quicker. And if we are looking at originality and decided gaming shouldn't be on Dtube and Steemit, what if someone made something along the lines of Battlefield Friends or Two Best Sisters Play? That's animation but it is based on video games. There's no way people could call that sort of thing unoriginal or low effort, but it is less original than if the animation wasn't based on the game. I don't know how well gaming content will do on Dtube and Steemit in the long run but gaming shouldn't be looked down upon for being "easy" or for not being 100% original. I think we should be trying to grow the gaming communities on Steemit and Dtube etc (I don't use dtube as the upload more often than not shits itself so I gave up, but I post my stuff on Steemit) as opposed to giving up and leaving the platforms.